The latest Apple Bluetooth controllers with Broadcom chip in it have
a small design change. Instead of including a USB hub with mouse and
keyboard devices, they are now HID interfaces on the same device.
T: Bus=04 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#= 39 Spd=12 MxCh= 0
D: Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=05ac ProdID=8290 Rev= 0.79
S: Manufacturer=Broadcom Corp.
S: Product=Bluetooth USB Host Controller
C:* #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr= 0mA
A: FirstIf#= 2 IfCount= 4 Cls=ff(vend.) Sub=01 Prot=01
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid
E: Ad=85(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
I:* If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid
E: Ad=86(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 3 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 3 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 3 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 3 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 3 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=btusb
E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)
The general layout of Bluetooth devices is that interface 0 is the main
interface and interface 1 is for audio data. This design obviously moves
it to main interface 2 and audio data on interface 3.
Starting with the MacBookPro12,1 (early 2015 models) the new Broadcom
BCM943602CS cards are used which show this interface layout.
usb 4-1.5: New USB device found, idVendor=05ac, idProduct=8290
usb 4-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 4-1.5: Product: Bluetooth USB Host Controller
usb 4-1.5: Manufacturer: Broadcom Corp.
Bluetooth: hci0: BCM: chip id 102 build 0243
Bluetooth: hci0: BCM: product 05ac:8290
Bluetooth: hci0: BCM20703A1 Generic USB UHE Apple 20Mhz fcbga_X87
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
drivers/bluetooth/btusb.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c064bb9540ee..5ee98231ac27 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -61,6 +61,7 @@ static struct usb_driver btusb_driver;
#define BTUSB_BCM_APPLE 0x10000
#define BTUSB_REALTEK 0x20000
#define BTUSB_BCM2045 0x40000
+#define BTUSB_IFNUM_2 0x80000
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
@@ -74,7 +75,7 @@ static const struct usb_device_id btusb_table[] = {
/* Apple-specific (Broadcom) devices */
{ USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
- .driver_info = BTUSB_BCM_APPLE },
+ .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
/* MediaTek MT76x0E */
{ USB_DEVICE(0x0e8d, 0x763f) },
@@ -2758,13 +2759,20 @@ static int btusb_probe(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep_desc;
struct btusb_data *data;
struct hci_dev *hdev;
+ unsigned ifnum_base;
int i, err;
BT_DBG("intf %p id %p", intf, id);
/* interface numbers are hardcoded in the spec */
- if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
- return -ENODEV;
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
+ if (!(id->driver_info & BTUSB_IFNUM_2))
+ return -ENODEV;
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
+ return -ENODEV;
+ }
+
+ ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
if (!id->driver_info) {
const struct usb_device_id *match;
@@ -2879,7 +2887,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->set_bdaddr = btbcm_set_bdaddr;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
- data->diag = usb_ifnum_to_if(data->udev, 2);
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
if (id->driver_info & BTUSB_BCM_APPLE) {
@@ -2887,7 +2895,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->set_diag = btusb_bcm_set_diag;
/* Broadcom LM_DIAG Interface numbers are hardcoded */
- data->diag = usb_ifnum_to_if(data->udev, 2);
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
}
#endif
@@ -2949,8 +2957,8 @@ static int btusb_probe(struct usb_interface *intf,
/* AMP controllers do not support SCO packets */
data->isoc = NULL;
} else {
- /* Interface numbers are hardcoded in the specification */
- data->isoc = usb_ifnum_to_if(data->udev, 1);
+ /* Interface orders are hardcoded in the specification */
+ data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
}
if (!reset)
--
2.4.3
--
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